Used solvent should be:
a) poured outside
b) handled by certified recyclers and disposal companies
c) thrown away in dumpsters
d) poured in drains

I believe it can be D because it does make sense to me ig...

B

Explanation:It should be handled by certified recyclers and disposal companies because a solvent when not properly disposed can be a serious pollutant to the environment due to the present of the chemical compound called base which is when mistakenly disposed into water body can a threat to general lives both in aquatic and terrestrial

d) attach a bag of weights to the tripod

Explanation: